Reducing Damp in an 18th-Century Cob & Stone Cottage

About The Property

Bramble Cottage is a predominantly 18th Century Grade II listed part cob and stone property in the picturesque village of St Agnes, Cornwall. This historic cottage is reportedly one of the oldest in the village.


Bramble Cottage was suffering from damp throughout, mainly due to the non-breathable materials previously applied to the existing historic fabric, with cement pointing and modern paints externally and a bitumen tanking application internally.

Solution and Materials

To maintain the breathability of the cottage, we removed all of the existing cement-based pointing, render and plaster applications both externally and internally, and introduced cob repairs. We replaced these applications using appropriate Lime mortar applications.

  • Cob Repairs – Cob Blocks
  • Lime Pointing (both external and internal) – NHL 2 and CLS 70 (External) and NHL 2 and CLS 70(Internal)
  • Lime Rendering: – NHL 2 And CLS 28/35, Horse Hair and Render Mesh
  • Lime Plastering – NHL 2 And CLS 28/25 with a finish coat of Lime Putty CLM 66
  • Internal and External Paints – Beeck to be applied to plasters and renders only

Leslie Cornell Building Restoration Ltd were the contractors for this project.